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  • Calculate directed broadcast address given IP address and subnet in PowerShell

    - by halr9000
    My goal is to calculate the directed broadcast address when given the IP and subnet mask of a host node. I know, sounds like homework. Once I reasoned through my task and boiled it down to this, I was amused with myself. Anyway, the solution will look something like the one in this question I suppose, but I'm not a math major and my C sucks. I could do with a PowerShell (preferred) or C# example to get me going. thanks!

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  • Redirecting without change of address in browser address bar

    - by Berny Paul
    I have a different but similar question. I have a dynamic dns account where I map my machine's dynamic IP to an address say, www.xxx.yyy.net Now, I have registered another short domain name say www.yyy.com, the hosting is on a linux server. Now, my machine is actually a webserver which runs .net website which can be accessed by www.xxx.yyy.net I need my homepage(index.php) in my www.yyy.com handle the redirection in a way that the pages to be loaded from www.xxx.yyy.net/.... but it should look in the browser as www.yyy.com/... Is there any way to do this using php?

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  • Would you recommend Head First Programming for someone new?

    - by Sergio
    My brother is just starting out college. He's studying the same thing I am here in Bolivia; Systems Engineer which is the equivalent of what a CS degree is in the US. Being his big brother and a programmer myself I really want to guide him and give him the right material to learn and become good at programming. My motives are selfish I admit, I want him to become really good so he can teach me things in the future. :) After poking around the web, I found Head First Programming. This book seems to teach the fundamentals of programming, using Python as the language. Would you recommend this book as his first book ever? Would learning Python as his first language stunt him somehow? What are your thoughts and suggestions? Thanks!

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  • 1000Base-X layer 2/MAC address details

    - by user69971
    A layer 2 Ethernet frame is sent with a source and destination MAC address. Given a 100Base-TX (copper) trunk between two Cisco switches, I can do a "show interface fa 0/0" on S1 to see the MAC address assigned to the trunking interface, then go to Switch2 and do a "show mac address-table" and find the MAC address of the S1 fa 0/0 interface as a dynamically learned MAC in the table. Given a similar setup with a 1000Base-X (fiber GBIC) trunk, the MAC address shown in "show interface gi 0/0" on S1 does not show up in the MAC address-table of S2. Everything I can find online indicates that 1000Base-X uses largely the same layer 2 format as copper connections. There's some slight alterations - minimum frame size is slightly larger - but the fundamentals of the frame structure appear to be the same, including transmission with a source and destination L2 address. Why doesn't the address of gi 0/0 show up in the MAC address table of the connection switch? The only thing which seems to make sense would be that the GBIC has its own MAC address, almost as if its acting as a mini 2-port switch or hub, with the switch-assigned MAC address showing up on the interface connection and a different MAC address assigned to the fiber side. If this is the case, is there any way to see the GBIC MAC address on the switch? (I've tried to look up the details in IEEE 802.3z but it doesn't seem to be available without an IEEE membership or purchasing the standard. I find the base 802.3 PDFs for download, but not 802.3z.)

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  • Static IP Address on Ubuntu 12.04 Virtual Machine

    - by chrisnankervis
    I've setup a VM running Ubuntu 12.04 specifically for local web development and am having some problems ensuring it has a static IP address. A static IP address is important as I'm using the IP address in my hosts file to assign a .local suffix to addresses used both in browser and to connect to the correct database on the VM. Currently, every time I connect to a new network or my VM is assigned a new IP address I need to reconfigure my whole environment which is becoming quite a pain. It also probably doesn't help that the default-lease-time on the Ubuntu VM is set to 1800 by default. At the moment I'm using VMWare Fusion and the Network Adapter is enabled and set to "Autodetect" under Bridged Networking. I've tried to set a static IP address within the dhcpd.conf using the code below: host ubuntu { hardware ethernet 00:50:56:35:0f:f1; fixed-address: 192.168.100.100; } The fixed-address that I've used is also outside the range specified in the subnet block (which in this case is 192.168.100.128 to 192.168.100.254). I've tried adding and removing the network adapter and restarting my Mac after each time to no avail. Below is an ifconfig of the VM that might be of some help: eth0 Link encap:Ethernet HWaddr 00:50:56:35:0f:f1 inet addr:192.168.0.25 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe35:ff1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1624 errors:0 dropped:0 overruns:0 frame:0 TX packets:416 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:147348 (147.3 KB) TX bytes:41756 (41.7 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Are there any specific issues with 12.04 that I'm missing? Otherwise has anyone else got any ideas? Thanks in advance.

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  • How to Assign a Static IP Address in XP, Vista, or Windows 7

    - by Mysticgeek
    When organizing your home network it’s easier to assign each computer it’s own IP address than using DHCP. Here we will take a look at doing it in XP, Vista, and Windows 7. If you have a home network with several computes and devices, it’s a good idea to assign each of them a specific address. If you use DHCP (Dynamic Host Configuration Protocol), each computer will request and be assigned an address every time it’s booted up. When you have to do troubleshooting on your network, it’s annoying going to each machine to figure out what IP they have. Using Static IPs prevents address conflicts between devices and allows you to manage them more easily. Assigning IPs to Windows is essentially the same process, but getting to where you need to be varies between each version. Windows 7 To change the computer’s IP address in Windows 7, type network and sharing into the Search box in the Start Menu and select Network and Sharing Center when it comes up.   Then when the Network and Sharing Center opens, click on Change adapter settings. Right-click on your local adapter and select Properties. In the Local Area Connection Properties window highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties button. Now select the radio button Use the following IP address and enter in the correct IP, Subnet mask, and Default gateway that corresponds with your network setup. Then enter your Preferred and Alternate DNS server addresses. Here we’re on a home network and using a simple Class C network configuration and Google DNS. Check Validate settings upon exit so Windows can find any problems with the addresses you entered. When you’re finished click OK. Now close out of the Local Area Connections Properties window. Windows 7 will run network diagnostics and verify the connection is good. Here we had no problems with it, but if you did, you could run the network troubleshooting wizard. Now you can open the command prompt and do an ipconfig  to see the network adapter settings have been successfully changed.   Windows Vista Changing your IP from DHCP to a Static address in Vista is similar to Windows 7, but getting to the correct location is a bit different. Open the Start Menu, right-click on Network, and select Properties. The Network and Sharing Center opens…click on Manage network connections. Right-click on the network adapter you want to assign an IP address and click Properties. Highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties button. Now change the IP, Subnet mask, Default Gateway, and DNS Server Addresses. When you’re finished click OK. You’ll need to close out of Local Area Connection Properties for the settings to go into effect. Open the Command Prompt and do an ipconfig to verify the changes were successful.   Windows XP In this example we’re using XP SP3 Media Center Edition and changing the IP address of the Wireless adapter. To set a Static IP in XP right-click on My Network Places and select Properties. Right-click on the adapter you want to set the IP for and select Properties. Highlight Internet Protocol (TCP/IP) and click the Properties button. Now change the IP, Subnet mask, Default Gateway, and DNS Server Addresses. When you’re finished click OK. You will need to close out of the Network Connection Properties screen before the changes go into effect.   Again you can verify the settings by doing an ipconfig in the command prompt. In case you’re not sure how to do this, click on Start then Run.   In the Run box type in cmd and click OK. Then at the prompt type in ipconfig and hit Enter. This will show the IP address for the network adapter you changed.   If you have a small office or home network, assigning each computer a specific IP address makes it a lot easier to manage and troubleshoot network connection problems. Similar Articles Productive Geek Tips Change Ubuntu Desktop from DHCP to a Static IP AddressChange Ubuntu Server from DHCP to a Static IP AddressVista Breadcrumbs for Windows XPCreate a Shortcut or Hotkey for the Safely Remove Hardware DialogCreate a Shortcut or Hotkey to Eject the CD/DVD Drive TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Nice Websites To Watch TV Shows Online 24 Million Sites Windows Media Player Glass Icons (icons we like) How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version Zoofs, find the most popular tweeted YouTube videos

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  • Get Local IP-Address using Boost.Asio

    - by MOnsDaR
    Hey, I'm currently searching for a portable way of getting the local IP-addresses. Because I'm using Boost anyway I thought it would be a good idea to use Boost.Asio for this task. There are serveral examples on the net which should do the trick. Examples: Official Boost.Asio Documentation Some Asian Page I tried both codes with just slight modifications. The Code on Boost.Doc was changed to not resolve "www.boost.org" but "localhost" or my hostname instead. For getting the hostname I used boost::asio::ip::host_name() or typed it directly as a string. Additionally I wrote my own code which was a merge of the above examples and my (little) knowledge I gathered from the Boost Documentation and other examples. All the sources worked, but they did just return the following IP: 127.0.1.1 (Thats not a typo, its .1.1 at the end) I run and compiled the code on Ubuntu 9.10 with GCC 4.4.1 A colleague tried the same code on his machine and got 127.0.0.2 (Not a typo too...) He compiled and run on Suse 11.0 with GCC 4.4.1 (I'm not 100% sure) I don't know if it is possible to change the localhost (127.0.0.1), but I know that neither me or my colleague did it. ifconfig says loopback uses 127.0.0.1. ifconfig also finds the public IP I am searching for (141.200.182.30 in my case, subnet is 255.255.0.0) So is this a Linux-issue and the code is not as portable as I thought? Do I have to change something else or is Boost.Asio not working as a solution for my problem at all? I know there are much questions about similar topics on Stackoverflow and other pages, but I cannot find information which is useful in my case. If you got useful links, it would be nice if you could point me to it. Thanks in advance, MOnsDaR PS: Here is the modified code I used from Boost.Doc: #include <boost/asio.hpp> using boost::asio::ip::tcp; boost::asio::io_service io_service; tcp::resolver resolver(io_service); tcp::resolver::query query(boost::asio::ip::host_name(), ""); tcp::resolver::iterator iter = resolver.resolve(query); tcp::resolver::iterator end; // End marker. while (iter != end) { tcp::endpoint ep = *iter++; std::cout << ep << std::endl; }

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  • Looking for good Regex book

    - by Cyberherbalist
    I've been trying to get a good grounding with Regular Expressions, and am looking for a single book to do so. I've been going through Amazon.com's listings on this subject, and I've identified a few possibilities, but am unsure which would be best for a C# developer who can write very simple Regexs, but wants to learn more. On a scale of 0-9 where 0 is knowing how to spell "Regex" but nothing else, and 9 where I could write a book on the subject out of my own head, I would place myself at 2. Which of the following would be your choice: Mastering Regular Expressions by Jeffrey E F Friedl Regular Expressions Cookbook by Jan Goyvaerts and Steven Levithan Sams Teach Yourself Regular Expressions in 10 Minutes by Ben Forta Beginning Regular Expressions (Programmer to Programmer) by Andrew Watt Regular Expression Recipes for Windows Developers: A Problem-Solution Approach by Nathan A. Good Regular Expression Recipes: A Problem-Solution Approach by Nathan A. Good Now, according to Amazon, "Regular Expressions Cookbook" (REC) above is rated the highest according to user ratings, but only based on 20 reviews. The first one, "Mastering Regular Expressions" (MRE) is rated second based on 140 reviews. This alone suggests that MRE might be by far the best one. But is it best for a relative beginner? Would I perhaps be better getting "Beginning Regular Expressions" (BRE) instead, to start with? Please help me resolve my confusion!

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  • My Expert F# Book has now arrived!

    - by MarkPearl
    So it has finally arrived from Amazon. Expert F# by Don Syme, Adam Granicz & Antonio Cisternino. I got a note from the post office yesterday that I needed to collect a package from their offices. After paying a 10% customs fee (that I wasn’t expecting) I had my new Yellow & Black F# Book… it’s so shinny. Trust my luck though – I have a few university assignments due this week as well as a crazy week of work so it has been sitting on my desk for a day and I haven’t managed to get into it. Eventually I managed to take a few minutes this evening to page through it and it looks really good. I can’t wait! So my goal this week is to cover Chapter 2 (by the end of the weekend) and put the appropriate posts up. F# is slowly working on me but I am keen to get a deeper understanding of the language which I am hoping this book will help me achieve.

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  • Know a good IP address Geolocation Service?

    - by carrier
    I'd like to get your impressions on any ip geolocation (as in IP to location) service services you may have employed? I'm looking for something free or cheap, which shouldn't be unrealistic because I need to make a very small volume of requests. Anything with python bindings would be especially ideal.

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  • QAS custom address layout

    - by DaveC
    I have been given a new format to add to the QAS ini file Qawserve.ini and want to use this format in the GetFormattedAddress() method call. How do I specify that I want to use this new custom layout? I have tried using the name as specified above the layout in [Custom Layout], for example: objAddress = new QuickAddress(AppSettings.ReadSetting("qasServer")) { Engine = QuickAddress.EngineTypes.Singleline, Flatten = false }.GetFormattedAddress(Picklist.Items[selectedValue].Moniker, "Custom Layout");

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  • Getting my ip address

    - by AntonioCS
    Hey! I have a computer on a small network, so my ip is 192.168.2.100. I am trying to get my real ip. I download the no-ip client but that just seems like a lot of trouble for such a simple thing. I created this php script that got http://www.ip-adress.com/ page and retrieved the ip it gave me. Is there a simpler way? Either using C, WSH or something. Or if there is an easier way in php please tell me. When I get the ip I'll uploaded it to my ftp site so that I can see the ip from work.

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  • Book Review: Professional WCF 4

    - by Sam Abraham
    My Investigation of WCF internals have set the right stage to revisit Professional WCF 4 by Pablo Cibraro, Kurt Claeys, Fabio Cozzolino and Johann Grabner. In this book, the authors dive deep into all aspects of the WCF API in a reading targeted towards intermediate and advanced developers. Book quality so far as presentation, code completeness, content clarity and organization was superb. The authors have taken a hands-on approach to thoroughly covering the WCF 4.0 API with three chapters totaling 100+ pages completely dedicated to business cases with downloadable source code readily available. Chapter 1 outlines SOA best-practice considerations. Next three chapters take a top-down approach to the WCF API covering service and data contracts, bindings, clients, instancing and Workflow Services followed by another carefully-thought three chapters covering the security options available via the WCF API. In conclusion, Professional WCF 4.0 provides a thorough coverage of the WCF API and is a recommended read for anybody looking to reinforce their understanding of the various features available in the WCF framework. Many thanks to the Wiley/Wrox User Group Program for their support of our West Palm Beach Developers’ Group.   All the best, --Sam

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  • Best Java Book(s) for an Experienced Developer

    - by Steven Elliott Jr
    I have been a .NET developer now for about the past 5/6 years give or take. I have never done any professional Java development and the last time I really touched it was probably back in college. I have been toying with the Scala language a little bit but nothing serious. Recently, I've been offered an opportunity to do some pretty cool work, but using Java instead of .NET. I think I can get by alright with my current skill set, meaning I already know how to program well and am familiar with languages such as C# and C++, etc. So, the syntax and all that language stuff are really not a problem. What I need is a really good reference book and a book about how to think in Java. Each language/Framework/Stack tries to address things a certain way and I'm sure Java is no different. What are some great Java books that you simply can't live without? Are there any books that talk about the most important parts of Java that must be understood before all else? As a side note, I will be doing mostly Java web development. Not really 100% on what types of stuff they are using for persistence, framework, server, etc. Thanks again for the consideration.

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  • New Book: Oracle Exalogic Elastic Cloud Handbook

    - by user12608550
    Oracle Exalogic Elastic Cloud Handbook, by Tom Plunkett, TJ Palazzolo, and Tejas Joshi, Oracle Press. The well-known characteristics and tiers of cloud computing have spawned myriad implementations by a host of vendors and system integrators. One of these, Oracle's Exalogic Elastic Cloud, part of Oracle's family of Engineered Systems, is a key component of Oracle's public and private cloud computing solutions, providing critical PaaS (Platform as a Service) features for cloud developers. These developers need guidance to take advantage of Exalogic's extensive capabilities, and the Oracle Exalogic Elastic Cloud Handbook, written by three highly experienced Oracle technologists, provides that guidance. Part One of the book covers Exalogic's hardware and software components, and includes a very useful chapter on deployment examples, describing best practices for scalabiity, availability, backup and recovery, and multi-tenant security, including integration with other Oracle Engineered Systems and products such as Exadata and storage subsystems. Part Two is a thorough guide to Exalogic installation features, configuration and monitoring, packaged application software management, and scalable application development. The book also provides an extensive list of online resources, including pointers to Web sites, whitepapers, instructional videos, and other Oracle documentation. So, if you're planning to implement Exalogic as part of your cloud infrastructure, or are considering such, you'll find lots of sage advice and best practices in this handbook.

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  • c++ address string -> long

    - by stefan
    I got an adress example: 0x003533 , its a string but to use it i need it to be a LONG but i dont know how to do it :S has anybody a solution? so string: "0x003533" to long 0x003533 ??

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  • AWS Load Balancer with a static IP address

    - by user965904
    I have a set-up running on Amazon cloud with a couple of EC2 Instances running through a load balancer. It is important that the site has a unique(static) IP or set of IPs as I'm plugging in 3rd party APIs which only accept requests made from IPs which have been added to their whitelist. So basically unless we can give these 3rd parties a static IP or range of IPs that the requests from the site will always come from then we would be unable to make any calls to them. Anyone knows how to achieve this as I know that Elastic IPs are not compatible with load balancers? If I were to look up the IP of the load balancer DNS name (e.g. dualstack.awseb-BAMobile-ENV-xxxxxxxxx.eu-west-1.elb.amazonaws.com resolves to 200.200.200.200) would that IP be Static? Any help/advise is greatly appreciated guys.

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  • Changing hosts but keep old emails [closed]

    - by LDaniel
    Possible Duplicate: Change host / keep emails OK here's the situation...I'm trying to transfer my domain and email address to a new hosting service and I would like to start using Google's domain apps for my email, etc. My email address is currently on a WebMail type platform and when I move my domain and start using Google domain apps I would also like to keep the old emails and have them imported the the email address on Google. Note: The email address will be the same on both hosts. For example [email protected]. So its keeping the same address between two different systems. I've been Googling how to do this for awhile and all the migrate options that come up don't appear in the the Google inbox setting or domain apps config settings. Any help is greatly appreciated.

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  • #MDX in London and speculation about future books

    - by Marco Russo (SQLBI)
    Chris Webb, who wrote the Expert Cube Development with Microsoft SQL Server 2008 Analysis Services book with me and Alberto , is preparing another Introduction to MDX course in London, this time from October 26th to 28th. It is now a three day course (previously it was two day) and you can find every other detail here . You might be wondering whether we are writing something else... well, we don't have plan to release a new edition of the Analysis Services book - after all, all the content of the...(read more)

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  • C# 4.0 IN NUTSHELL

    - by mohi88
    Share | I found this book very useful and a must-read. The book is really a good reference for C# in general and C# 4.0. Thanks Albahari C# 4.0 IN NUTSHELL

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